Victor langlois



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Leam Pfam No. 82,534, dated September 29, 186s.

IMPROVEMENT IN STEAM-GNRATORS.

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4TO- ALL WHOM I'l MAY CONOERN:

Be it known that I, VICTOR LANGLOIS, head master at Cherbourg dock-yard, France, have invented Movable Tubes in Steam-Generators orBoilers of -the polytubula'r system, also appljcableto polytubular condensing and distilling-apparatus, and new or improved tools for the installing thereof; andI do hereby declare that the following is a full, clear, and exact description ol' the same, reference being had tov the annexed sheets of drawings, making a part of the same. l

My invention refers to improvements in steam polytubular generators or steam tubular boilers, as used for v Steamers, locomotives, locomobles, stationary, 85e., engines, the same improvements being also applicable to tubular condensing and distilling-apparatus; and it consists in the construction and arrangement of parte, as will be hereinafter more fully described.

The advantages resulting from this new arrangement aref First, ready disincrustation ot' the tubes, andthe consequent saving cf fuel and repairs resulting therefrom.

Second, a preventive means against the inconvenience of tubular dilatations. The tubes for generators-and other apparatus are practically set up by fitting a metallic (steel generally) ring, which admits the tube-ends round between its sides and the 'plates or partitions which support and limit the said tubes. 1

In order to mobilize the tubes within tubular generators and other Aapparatus of the mentioned description, I thought of securing them up at one end by a screw on the receiving-plate, whereby said tubes are readily i taken off, cleaned, and disincrusted, the result of which being a saving both of fuel and of repairs, and also a preventive means against the inconveniences of tubular dilatations, which are free to bc produced without any injury resulting therefrom for the plates in the holes of which the tubes are inserted.

In the accompanying sheets of drawing-q Figure l, Sheet I, is a longitudinal section, taken through the centre of a marine-boiler furnace. The upper tubes are set up and secured by screws, which connecting-device is my invention, whilst the lower ones are ixed by means et' the usual ring, to show the diiference between the two connections.

Figure 2 is a front view of thc'same marine. boiler.

Figures 3 and 4, Sheet II, are a longitudinal vertical section and an end view of a tube secured by screw, on a larger scale than figs. l'and 2. i Y

Figures 5 and 6 show the vertical section and an end view of a fragment of tube secured-by the usual'ringconnection, alsoon a larger scale than figs. 1 and 2.

Figure 7 shows the central vertical section of a fragment of tube, connected likewise by means of the usual ring-device, also on a larger scale than figs. 1 and 2.

P and P show the plates which support and limit the tubes.

C and C are the fire and smoke-boxes, arranged in the most usual manner.

A S show the new,tubular connection.v

At. S is formed, or otherwisevitted on the tube, a threaded ring, screwing into a correspondent threaded hole or nut, formed on plate P', said hole being larger than the diameter of the tube, which allows of thelattcr being readily taken out when covered with a layer of tartar, and as `easily pnt vup when oncc freed from it.

At A is a ring-connection allowing the longitudinal dilatation, still prcsenving the proper adjustment with the tubular plates. The two bas'es,being cylindrical, are kept infpcrfect contact by the annulartight-acting dilatation.

At U and U', gs. 5, 6, and 7, is shown the ordinary connection of tubes in tubular boilers. Above the metallic sheet is traced a line, showing the tartar or incrustation-level, whereby is prevented the ,putting off of the tube through the openings in the plates, upon which-arc screwed the two ends of the tube.

In orde! to take out the tubes thus incrusted, it is necessary either to cut both their ends, or emboss them, or otherwise, impair their proper shape.

On first survey it is easy to ascertain the superior' importance of the system of movable tubes over the common improvidence of the various methods of' tubular connections, as actually used and shown :it figs. 1, 2, 5, 6,'and 7, and recall to mind the expenses resulting from their work and their consequent repairs.

The movable tubes, by their ready setting up and oli', may befreed fro-m incrustations, the deposits and settlings of everyv nature being periodically removed; hence will Erst result a notable saving-of fuel, a greater and more constant production of steam; therequired repairs-in' the re-box 4being rendered easier, will be more efliciently made, which improvements will insure a regular Working of the apparatus, and also a longer wear.

The application of'these improvements, in shortening the work relative to the tubes, willreally increase the security ol' the attendants on the motive-apparatus, who will be at all times enabled to ascertain exactly thc conditions of the tubular parts in the boiler, which-it is actually-very dil'icult to do even for the most accessible tubes, andpquite impossible in the centralparts of the groups. But it is needless to longer describe the advantages of this new connection of the tubes, as their application ivill better prove the goodresults thereof.v

Figures 8, 9, 10, 11,- 12,- 13, 14, and 15, show central vertical longitudinal sections of`one end ofthe movable tubes connected by screws, in accordance with my system, wherein is seen a variable numherof threads, and the said tube-ends diversely put up, together with the thread-bearing part.

Figures' 16 and 17 are end views, and in these figures the same letters of reference indicate thelike parts.

a, tube; 6, threaded end; c, external cap or adjutage, projecting from the tire-box plates,and provided with notches for screwing said tube in and olf.

In fig. 8, the external adjutage c is formed with the tube.

In iig 9, the adjutage c is cast with an extension, wl1i'cl1.is welded on to the tube.

vIn fig. 10, the same adjutage is cast with a ledge, intended to receive the tube, the ends of which are bevelledv.

In fig. 11, the adjutage c is cest with alledge, for receiving the unbevelled tube.

In iig. 12, the adjutage c is formed in a ledge, which is to receive the bevellcdtube riveted on both its ends.

In tig. 13, theadjutage c is formed in a ledge, for receiving the unbevelled and riveted tube.

In figs. 10, 11, 12, and 13, the various extensions are obtained by Welding thev end of the tube on to the adjutage.

In order to prevent oxidation, which would greatly impair` the thread, I use a stuit` composed with tallow and very ne powder of zinc or oxide of zinc. With this stuil'l lubrif'y the adjutage-threads,.for the purpose of rendering the set of the tube easier. After a few hours heating there no longer remains any grease, but

I ting up and ol` the said movable tubes, substantially as described.

the zinc-powder is left on the threads, and prevents oxidation.

f is a small leaden cap, fitting on a similar hemp-head, to better insure the joint. After a certain time the hemp will be off, but the lead will lit on and form a tight joint.

I O'Zaz'ms. 1. The construction and arrangement of the tubes a, having the threaded ends b and external .caps c, the lead paekingf, rings A, and plates P P', substantially as herein shown and described.

2. The various tools for ei'ecting such work of the plates and tubes as I have described, and also for put- LANGLOIS.

Wi tncsses Gr. SoNcLncr, MABIRE. 

